package wodegua.d29_多线程;

import java.util.concurrent.Callable;

public class MyCallable implements Callable<String> {
    private final int n;


    public MyCallable(int n) {
        this.n = n;
    }

    @Override
    public String call() throws Exception {
        //求1-n的和
        int sum = 0;
        for (int i = 1; i <= n; i++) {
            sum += i;
        }

        return "1-" + n + "的和=" + sum;
    }
}
